7. Make a pattern using numbers.

    #include <stdio.h>
    #include <conio.h>
    int main()
    {
        int z = 1, n = 4, i, j, k;
        // clrscr();
        for (i = 1; i <= n; i++)
        {
            for (j = n - 1; j >= i; j--)
                printf(" ");
            for (k = 1; k <= z; k++)
                printf("%d", k);
            z++;
            printf("\n");
        }
        return 0;
    }